2-dimensional code region extraction method, 2-dimensional code region extraction device, electronic device, 2-dimensional code region extraction program, and recording medium containing the program

A two-dimensional code region extraction device (1) comprising: a vertical and horizontal scanning comprises scanning means (11) of the two-dimensional code image data; blank portion detected by the detecting means is a white / black level pixels and scanning the blank determining section (12); calculating a blank portion is present in the non-computing means (13) and the coordinates of the length of the central blank portion between the non-blank portion detected; non-blank length portion are present in the vertical direction and the horizontal direction thereof and center coordinates are compared to determine the presence of the two-dimensional code comparing unit (14); and a plurality of two-dimensional code candidate region is detected and the comparison determination unit (15) Sort its.